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  2. Flip clock - Wikipedia

    en.wikipedia.org/wiki/Flip_clock

    An electric motor (often synchronous, if directly connected to the AC line) turns two sets of wheels continuously via a reduction gear train: the faster at a rate of 1 revolution per hour, the slower at a rate of 1 revolution per 24 hours. The wheels move continuously, not in steps. Mechanism of a split-flap alarm clock, removed from its case.

  3. Alarm clock - Wikipedia

    en.wikipedia.org/wiki/Alarm_clock

    This is an accepted version of this page This is the latest accepted revision, reviewed on 25 February 2025. Type of clock A traditional wind-up (key-wound), mechanical spring-powered alarm clock An alarm clock or alarm is a clock that is designed to alert an individual or group of people at a specified time. The primary function of these clocks is to awaken people from their night's sleep or ...

  4. Timer - Wikipedia

    en.wikipedia.org/wiki/Timer

    An example of a simple timer is an hourglass. Commonly, a timer triggers an alarm when it ends. A timer can be implemented through hardware or software. Stopwatches operate in the opposite direction, upwards from 00:00, measuring elapsed time since a given time instant. Time switches are timers that control an electric switch.

  5. The best sunrise alarm clocks of 2025 - AOL

    www.aol.com/lifestyle/best-sunrise-alarm-clocks...

    Notable features: Brightness variable from 0%-100% | Sunset simulation | 13 preloaded alarm sounds | Numerous relaxation sounds | Night-light setting The Hatch Restore 2 is a full-featured sunrise ...

  6. Network Time Protocol - Wikipedia

    en.wikipedia.org/wiki/Network_Time_Protocol

    (Unofficial) Google Refid used by Google NTP servers as time4.google.com For servers on stratum 2 and below, the refid is an encoded form of the upstream time server's IP address. For IPv4, this is simply the 32-bit address; for IPv6, it would be the first 32 bits of the MD5 hash of the source address.

  7. Genius hour - Wikipedia

    en.wikipedia.org/wiki/Genius_hour

    Genius Hour originated from the 80/20 idea of many innovative companies, such as Google, where employees are given 20% of their time at work to work on their own projects. This system became very successful, with products such as Gmail, Google News, and 50% of Google's projects. [1]

  8. History of timekeeping devices - Wikipedia

    en.wikipedia.org/wiki/History_of_timekeeping_devices

    The time was determined by observing particular stars as they crossed the meridian. [24] The Jantar Mantar in Jaipur built in 1727 by Jai Singh II includes the Vrihat Samrat Yantra, 88 feet (27 m) tall sundial. [25] It can tell local time to an accuracy of about two seconds. [26]

  9. Grandmother Who Kept Alarm on Fridge, Leading to Starvation ...

    www.aol.com/grandmother-kept-alarm-fridge...

    If you suspect child abuse, call the Childhelp National Child Abuse Hotline at 1-800-4-A-Child or 1-800-422-4453, or go to www.childhelp.org. All calls are toll-free and confidential. The hotline ...